.Piece{
    display:flex;
    justify-content:center;
    align-items:center;
    width: 70px;
    height: 70px;
    border: 1px solid black;
}
.ball{
    width: 50px;
    height: 50px;
    border-radius: 50%;
}
.stateRed{
    box-shadow:inset  0 0 20px red ;
}
.stateBlack{
    box-shadow:inset  0 0 20px black ;
}